No and no. At 98% your battery life is pretty much "as good as it gets". I have 90% and do not see getting the battery replaced as worth it. Some here have actually reported that replacement battery (even from Apple) does not perform as well as original in long run. Few % is not worth anyone prying open the phone, which is basically glued together. 10-15%, may be. More than 20%, oh yes...
And No, they will not hand you battery. Apple position is that battery are not user serviceable anyway. So they will not supply you with battery.
And No, they will not hand you battery. Apple position is that battery are not user serviceable anyway. So they will not supply you with battery.